Men's Exos Pro 55L Ultra-Light Pack

Nearly a pound lighter than the Exos 58 and featuring a more fine-tuned adjustment system, the 55-liter Exos Pro is the most comfortable ultralight thru-hike backpack in its weight class. A highly-ventilated AirSpeed™ backpanel supports light loads with ease while maintaining maximum airflow across your back, making it an ideal pack for your most long-distance endeavors on the Appalachian Trail, Pacific Crest Trail and beyond. Features: Removable, floating single compartment top lid with key clip Four webbing lash points on top lid FlapJacket secures main compartment access and provides weather protection when lid isn't used. Removing top lid reduces carry capacity by 9 L and weight by 80 g Internal hydration sleeve with center back hose port and Osprey Hydraclip for easier reservoir hanging Internal compression strap keeps loads stable Large front fabric compression pocket with stretch side panels accommodates overloads Multiple front panel lash points for securing extra gear Lower side compression straps designed to capture sleeping pad on front panel Deep, dual access stretch mesh side pockets Dual ice axe loops with handle capture by upper compression straps Key Attributes: Airspeed Suspension - A tensioned mesh backpanel keeps the weight off your back, enabling highly ventilated carrying comfort. Volume Flexibility - Compression straps and removable lid allow for functional capacity adjustment. Ultralight Design - Lightweight fabrics deliver durable performance. Removable Lid - Sheds 74 g / 2.6 oz. when the top lid is removed. An integrated FlapJacket secures the main compartment opening, providing weather protection and load stability when the lid isn't used. Carry Information: Ultralight Airspeed Suspension -  Lightweight injection-molded ladder provides 4" of torso adjustability, Two-sizes-per-gender design ensures perfect fit and allows for quick, easy adjustment, 3.5 mm powder-coated LightWire frame balances support and dynamic flex Backpanel -  3D-tensioned breathable mesh backpanel ensures supportive fit, Silicone print on lumbar fabric enhances hipbelt grip Exoform Harness -  Shoulder straps combine reverse spacer mesh, die cut EVA foam and a unique structured 3D mesh to deliver excellent support and ventilation, Ventilated mesh yoke evenly distributes load for comfort while maintaining breathability, 15 mm adjustable slide sternum strap with rescue whistle Exoform Hipbelt -  EVA foam padded hipbelt offers dynamic stretch for a secure, dynamic fit, Zippered pocket provides secure storage Specs: LOAD RANGE 10 - 30 lbs. S/M VOLUME 3356 IN 3 / 55 L DIMENSIONS 28.35H X 3W X 12.2D IN. WEIGHT LBS. L/XL VOLUME 3539 IN 3 / 58 L DIMENSIONS 30.31H X 14.96W X 12.2D IN. WEIGHT LBS.   Fabric: MAIN - NanoFly™: 100D Nylon x 200D UHMWPE ripstop, DWR treatments made without PFAS BOTTOM - NanoFly™: 100D Nylon x 200D UHMWPE ripstop, DWR treatments made without PFAS